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Is x-y+1 greater than x+y-1 ?

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Is x-y+1 greater than x+y-1 ? [#permalink] New post 30 Apr 2012, 08:48
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Is x-y+1 greater than x+y-1 ?

(1) x > 0
(2) y < 0
[Reveal] Spoiler: OA

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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 30 Apr 2012, 08:58
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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 01 Dec 2013, 06:28
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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 01 Sep 2014, 09:52
Hi Bunuel,

y<1 can also mean y=0 right.. how can we assume y<1 is equal to y<0?
please clarify if i am missing some point..
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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 01 Sep 2014, 09:55
Expert's post
janani28 wrote:
Hi Bunuel,

y<1 can also mean y=0 right.. how can we assume y<1 is equal to y<0?
please clarify if i am missing some point..


The question asks whether y is less than 1. The second statement says that y is a negative number, so it must be less than 1.

Does this make sense?
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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 01 Sep 2014, 09:58
yeah.. my bad...got the point ... thanks much :)
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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 10 Apr 2015, 00:08
Bunuel wrote:
Is x-y+1 greater than x+y-1 ?

Is x-y+1>x+y-1? --> x's cancel out and we get: is 2>2y? --> is y<1?

(1) x > 0. Not sufficient.
(2) y < 0. The answer to the question is YES. Sufficient.

Answer: B.


Hi Bunuel,

Can we cancel out x in this inequality. we dont know whether x is positive or negative. pls help.

Thanks,
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Re: Is x-y+1 greater than x+y-1 ? [#permalink] New post 10 Apr 2015, 00:12
CKG wrote:
Bunuel wrote:
Is x-y+1 greater than x+y-1 ?

Is x-y+1>x+y-1? --> x's cancel out and we get: is 2>2y? --> is y<1?

(1) x > 0. Not sufficient.
(2) y < 0. The answer to the question is YES. Sufficient.

Answer: B.


Hi Bunuel,

Can we cancel out x in this inequality. we dont know whether x is positive or negative. pls help.

Thanks,


My Bad, Got confused. we can add or subtract anything form the inequalities and hence X cancels out !!
Re: Is x-y+1 greater than x+y-1 ?   [#permalink] 10 Apr 2015, 00:12
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